[Droid Eris Android Development] token419:
So i just found where on the incredible on Froyo 2.2 Sense that the MMS Size values are stored. they are in /system/customize/MNS/default.xml

** EDIT ** Changing this actually changed the values being used after a Dalvik/Data wipe, so now we know where the display values as well as the true values are for Froyo Roms :)

changing mine now to:

<module name="MessageConfig">
<function name="setting">
<set name="single">
<item name="SMS_Delivery_Report">false</item>
<item name="MMS_Delivery_Report">false</item>
<item name="MMS_Auto_Retrieve">true</item>
<item name="MMS_Priority">Normal</item>
<item name="MMS_Msg_Size1">200K</item>
<item name="MMS_Msg_Size2">500K</item>
<item name="MMS_Msg_Size3">[COLOR="red"]1000K[/COLOR]</item>
<item name="MMS_Msg_Size_Choose">[COLOR="red"]1000K[/COLOR]</item>
<item name="MMS_Received_Notify">true</item>
<item name="MMS_Play_Received_Notify">true</item>
<item name="MMS_Received_Notify_sound">Default Ringtone</item>
<item name="MMS_Received_Viberation">true</item>
<item name="MMS_Sent_Notify">false</item>
<item name="MMS_Fail_Notify">true</item>
<item name="MMS_Play_Notify">true</item>
<item name="MMS_Notify_Sound">Default Ringtone</item>
<item name="MMS_Viberation">true</item>
</set>
</function>
</module>

Going to play around with this also and ill edit the post when i find settings that dont convert every MMS i send into a slideshow (i think thats due to cricket not recognizing our UserAgentString... going to experiment with adding the Zio string :)

<category name="force_change">
<module name="Browser">
<!-- Web Browser UA string -->
<function name="ua_string">
<set name="single">
<item name="value">ADR6300</item>
</set>
</function>
<function name="ua_string_mobile">
<set name="single" />
</function>
<function name="ua_string_desktop">
<set name="single" />
</function>
<!-- UA profile URL -->
<function name="ua_profile">
<set name="single">
<item name="value">http://uaprof.vtext.com/pcd/adr63k/adr63k.xml</item>
</set>
</function>
<!-- Mobile_view -->
<function name="mobile_view">
<set name="single" />
</function>
<!-- Default text encoding -->
<function name="default_text_encoding">
<set name="single" />
</function>
<!-- Location_Setting -->
<function name="geolocation">
<set name="single" />
</function>
<!-- Open pages in overview -->
<function name="overview">
<set name="single" />
</function>
</module>
<!-- MMS UA string -->
<module name="MMS">
<function name="ua_string">
<set name="single">
<item name="value">pcdadr63k</item>
</set>
</function>
</module>
<!-- J2ME UA string -->
<module name="J2ME">
<function name="ua_string">
<set name="single">
<item name="value">HTC-IncredibleC/1.0 Mozilla/5.0 (Linux; U; Android 1.6; en-us) Profile/MIDP-2.0 Configuration/CLDC-1.1</item>
</set>
</function>
</module>
</category>

** EDIT **

Display Values are here (only affect what is shown when you open the Messages application > Menu > Settings > Maximum Message Size" "Mms.apk>res>values>arrays.xml":

<string-array name="htc_verizon_pref_entries_mms_max_size">
<item>200K</item>
<item>500K</item>
<item>[COLOR="Red"]1.0M[/COLOR]</item>
</string-array>

Also found that in "Mms.apk>smali>com>android>mms>transport>HttpUtils.smali"

is where the http://mms.mycricket.com/servlets/mms?X-Cricket-MDN=xxxxxxxxxx

automatically gets appended, making our APN actually only need:

http://mms.mycricket.com/servlets/mms

The rest was getting appended already, but incorrectly due to the Mms.apk file, this change will make it work correctly and auto fill in your correct telephone number!!

const-string p1, "X-[COLOR="Red"]Cricket[/COLOR]-MDN"

Ill update this post if i find values that get MMS working properly (no slideshow and proper resizing) for the first time ever on my account :)